iio: sx9310: Off by one in sx9310_read_thresh()

This > should be >= to prevent reading one element beyond the end of
the sx9310_pthresh_codes[] array.

Fixes: ad2b473e2ba3 ("iio: sx9310: Support setting proximity thresholds")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/X8XqwK0z//8sSWJR@mwanda
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c
index a2f8209..62eacb2 100644 (file)
--- a/drivers/iio/proximity/sx9310.c
+++ b/drivers/iio/proximity/sx9310.c
@@ -601,7 +601,7 @@ static int sx9310_read_thresh(struct sx9310_data *data,
                return ret;
 
        regval = FIELD_GET(SX9310_REG_PROX_CTRL8_9_PTHRESH_MASK, regval);
-       if (regval > ARRAY_SIZE(sx9310_pthresh_codes))
+       if (regval >= ARRAY_SIZE(sx9310_pthresh_codes))
                return -EINVAL;
 
        *val = sx9310_pthresh_codes[regval];